PDF malware analysis — malicious · af239471af5d66cf

MALICIOUS

PDF

354.0 KB Created: 2022-03-24 18:05:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21

MD5: a1f5be0d8e8ad0a17ca9571abf788c5c SHA-1: bf9c4732584a8b1bf6fc71d239d4d2230ad6c675 SHA-256: af239471af5d66cf1b9c121533b97325741559c7f328d29f7663018086a98202

166 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.6388

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://wirut.co.za/XSRYdR1H?utm_term=british+army+sniper+training+manual+pdf PDF link annotation
- https://taechoclub.com/FileData/ckfinder/files/20220205_5A45ECF826DACA8A.pdfIn PDF document text
- http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/1621c750713c67---xeximelowofujefironurezi.pdfIn PDF document text
- https://cashcruis.ru/wp-content/plugins/super-forms/uploads/php/files/6e47332ab7c659885e1c70a683040878/rarupasidofimaparefidatez.pdfIn PDF document text
- https://hankilfood.com/upfile/files/76640932704.pdfIn PDF document text
- http://vantaidongsaigon.com/uploads/files/suxex.pdfIn PDF document text
- https://ukmalayalamnews.com/userfiles/file/vugidiputevezudejixi.pdfIn PDF document text
- https://vida.posilatko.cz/files/wswg/files/11400197974.pdfIn PDF document text
- http://sarkar.ie/userfiles/file/mefunuzinupavon.pdfIn PDF document text
- https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16208b7d55a35a---lamosokamakovuniva.pdfIn PDF document text
- https://varida-tech.com/ckfinder/userfiles/files/goxemorikitivux.pdfIn PDF document text
- https://www.pkkmaluku.org/berkas/plugin/ckeditor/kcfinder/upload/files/11876739437.pdfIn PDF document text
- http://stickers-moins-cher.com/userfiles/stickers-moins-cher.com/file/41957472484.pdfIn PDF document text
- https://dvcard.dsverano.com/UserFiles/File/97096678714.pdfIn PDF document text
- http://www.luna1956.com/images/library/File/91489154588.pdfIn PDF document text
- http://prochem.vn/images/uploads/files/6315877330.pdfIn PDF document text
- http://blog-lunettes.top-lunettes.com/userfiles/file/savar.pdfIn PDF document text
- http://pappteam.hu/userfiles/file/72781714628.pdfIn PDF document text
- http://mientaytourist.com/uploads/files/30433471193.pdfIn PDF document text
- http://makaroma.fr/upload/file/sonixopep.pdfIn PDF document text
- https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f9bf7b2e569---jelabofagutesawa.pdfIn PDF document text
- http://whuntex.info/userfiles/file/fidekawakujumex.pdfIn PDF document text
- https://bp-con-esh.com/kcfinder/upload/files/lanuvarejovupogepurugo.pdfIn PDF document text
- https://www.gaiascience.com.my/assets/adminpanel/plugins/ckeditor/plugins/kcfinder/upload/files/kuxewovememuzid.pdfIn PDF document text
- http://www.temaricerca.com/entry2013new/admindia/ckfinder/userfiles/files/90702161395.pdfIn PDF document text
- http://dirk6.3pi.org/images/uploadedimages/file/fosunilafajuw.pdfIn PDF document text
- https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/1620e3e0abe9c9---tizipana.pdfIn PDF document text
- http://townofwinslowin.com/flash/townofwinslowin.com/file/rijojulikelogosenebemuzit.pdfIn PDF document text
- http://operahazyborlovagok.hu/browser/files/senezes.pdfIn PDF document text
- https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/36c69062682d989ed9deb4756feea416/vitufaginovibejireze.pdfIn PDF document text
- http://securite.paqt.fr/images/file/48268722326.pdfIn PDF document text
- http://sherpakhabar.com/dbros/public/ckeditor/kcfinder/upload/files/dafuzumatujisiwewudavojan.pdfIn PDF document text
- https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/589c159432587ed06602f35de88a4851/nuvilirupiwifajuw.pdfIn PDF document text
- https://frutalmente.pt/site/upload/file/nunirotixedava.pdfIn PDF document text
- https://tkaniny-svitap.cz/kcfinder/upload/files/xowamebumonevuwuka.pdfIn PDF document text
- http://ainut.fi/userfiles/file/94186160663.pdfIn PDF document text
- http://bouwbedrijfbouwheer.nl/userfiles/file/81702793220.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000514c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x514C2	16560 bytes
SHA-256: `924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9`
`font_01_sfnt_off00052be2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x52BE2	11092 bytes
SHA-256: `22661832270d2d955df5df5b784ecd68e574fe407e522f2052a68195f7aaf41b`
`font_02_sfnt_off00054568.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x54568	19296 bytes
SHA-256: `adcb588249aea7cd42a7eec4b681235ee5f353e656e2e5c15f9e56013e535c33`

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